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by peelypost
Thu Sep 24, 2009 10:40 am
Forum: Damp and Damp Proofing Forum
Topic: Lowering ground level with trench - how wide?
Replies: 2
Views: 6484

That explains it - thanks. I was thinking of hydrostatic pressures and just needing to break the ground contact - hadn't thought of the rain splash.

Pretty obvious really!

:D
by peelypost
Tue Sep 22, 2009 4:15 pm
Forum: Damp and Damp Proofing Forum
Topic: Lowering ground level with trench - how wide?
Replies: 2
Views: 6484

Lowering ground level with trench - how wide?

Hi,

We need to lower external ground levels to below DPC and have been advised that we need a good 800mm width excavation. Does it really need to be this wide? I can't see how 800mm will be any more effective than 400mm with a grate on top.

What do you think?

Thanks,

N
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